This paper proposes a dialogue between the poetic notes in As Cidades invisíveis by Italo Calvino and the possibility of experimenting the exchange of different urban realities on the internet. In order to develop this idea it seems adequate to create a website to promote this interchange of cities or the interchange of visions of cities all over the world from the point of view of web users through their statements, photos, sounds, impressions and any fragments that will express their personal readings. It will be possible not only to think their experience of city as well as investigating it from an individual and collective point of view, of the native and of the visitor, but also discuss new means of exchange of information, visual or verbal, in this specific work, about cities, provided by web technology which gets more and more available.